Geostatistics?

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Geostatistics applies the theories of stochastic processes and statistical inference to geographic phenomena. It was traditionally used in geo-sciences. Methods of geostatistics are used in petroleum geology, hydrogeology, hydrology, meteorology, oceanography, geochemistry, geography, forestry, environmental control, landscape ecology, agriculture (esp. in precision farming) etc.

The basic concept of geostatistics is that of scales of spatial variation. Spatially independent data show the same variability regardless of the location of data points. However, spatial data in most cases are not spatially independent. Data values which are close spatially show less variability than data values which are farther away from each other. The exact nature of this pattern varies from data set to data set; each set of data has its own unique function of variability and distance between data points. This variability is generally computed as a function called semivariance.

Spatial autocorrelation can be analyzed using correlograms, covariance functions and variograms (=semivariograms).

Dr Herbert Sichel pioneered the field of geostatistics with Professor Danie Krige.

See also

• statistics
• geology
• GIS
• remote sensing
• kriging

References

1. Chilès, J.P., Delfiner, P. 1999. Geostatistics: modelling spatial uncertainty, Wiley Series in Probability and Mathematical Statistics, 695 pp.
2. Deutsch, C.V., Journel, A.G, 1997. GSLIB: Geostatistical Software Library and User's Guide (Applied Geostatistics Series), Second ion, Oxford University Press, 369 pp., http://www.gslib.com/
3. Deutsch, C.V., 2002. Geostatistical Reservoir Modeling, Oxford University Press, 384 pp., http://www.statios.com/WinGslib/index.html
4. Isaaks, E.H., Srivastava R.M.: Applied Geostatistics. 1989
5. Kitanidis, P.K.: Introduction to Geostatistics: Applications in Hydrogeology, Cambridge University Press. 1997
6. Matheron, G. 1962. Traité de géostatistique appliquée. Tome 1, ions Technip, Paris, 334 pp.
7. Matheron, G. 1989. Estimating and choosing, Springer-Verlag, Berlin.
8. Sharov, A: Quantitative Population Ecology, 1996, http://www.ento.vt.edu/~sharov/PopEcol/popecol.html
9. Shine, J.A., Wakefield, G.I.: A comparison of supervised imagery classification using analyst-chosen and geostatistically-chosen training sets, 1999, http://www.geovista.psu.edu/sites/geocomp99/Gc99/044/gc_044.htm
10. Wackernagel, H. 2003. Multivariate geostatistics, Third ion, Springer-Verlag, Berlin, 387 pp.

External links

AI-GEOSTATS is the main resource on the internet about geostatistics and spatial statistics

What does Geostatistics mean ? Search with Google !

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